8 FLORIDA GEOLOGICAL SURVEY

 TEMPERATURE

 Temperatures in the area are mild. The average annual temperature
at Pensacola is 68'F. Average monthly temperatures vary from a high of
810F in July and August to a low of 54F in December and January. The
extreme temperatures recorded at Pensacola have been as high as 103F
and as low as 7F; however, they seldom rise above 100F or drop
below 200F. On the average, 275 frost-free days occur annually. Winter
temperatures may be as much as 10F higher along the coast than in
the northern part of the area.


 WELL-NUMBERING SYSTEM

 The well-numbering system that is derived from latitude and longi-
 tude coordinates is based on a state-wide grid of 1-minute parallels

 C ees 'A 1-9hde -eT of the Gree-nr Engl-nd. pr-me m-4d-an

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 Figure 3. Map of Florida showing the well-numbering system.